Pump with oil cavity temperature adjusting function

Abstract

The utility model relates to the technical field of pumps, in particular to a pump with an oil cavity temperature adjusting function. Comprising a driving device, a shaft transmission mechanism and a rotating mechanism, the shaft transmission mechanism comprises a shell, a plurality of layers of oil cavities, standby cavities, mechanical oil seals and framework oil seals are arranged in the shell, the multiple layers of oil cavities, the mechanical oil seals, the standby cavities and the framework oil seals are arranged in a staggered mode or in sequence, and the connecting shaft is communicated with the multiple layers of oil cavities, the standby cavities, the mechanical oil seals and the framework oil seals. One of a lubricating oil layer, a cooling layer or a heating layer can be arranged in the standby cavity; temperature adjustment is carried out in the shaft transmission mechanism, the temperature adjustment effect is good, it can be effectively ensured that the state of oil is not prone to change, then the using effect of the shaft transmission mechanism is improved, and the service life of the shaft transmission mechanism is prolonged; in addition, the standby cavity can be used as an oil cavity, grease can be injected into the standby cavity, the mechanical oil seal and the framework oil seal can be lubricated, and the standby supplementing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pumps, in particular to a pump with an oil cavity temperature regulation function. Background Technique

[0002] A pump is a machine that transports fluids or increases the pressure of fluids. It transfers the mechanical energy of the prime mover or other external energy to the liquid, increasing the energy of the liquid. Pumps are mainly used to transport liquids such as water, oil, acid-base solutions, emulsions, suspension liquids, and liquid metals, and can also transport liquid-gas mixtures and liquids containing suspended solids. Pumps can usually be classified into three categories according to the working principle: positive displacement pumps, dynamic pumps, and other types of pumps. In addition to classification according to the working principle, they can also be classified and named by other methods. For example, according to the driving method, they can be divided into electric pumps and water turbine pumps, etc.; according to the structure, they can be divided into single-stage pumps and multi-stage pumps; according to the use, they can be divided into boiler feed pumps and metering pumps, etc.; according to the nature of the transported liquid, they can be divided into water pumps, oil pumps, and mud pumps, etc. According to the presence or absence of a shaft structure, they can be divided into linear pumps and traditional pumps. A water pump can only transport logistics with fluid as the medium and cannot transport solids.

[0003] At present, the pump structure generally includes a motor, an output shaft, a shaft transmission mechanism, and an impeller. The motor is connected to the output shaft, and the other end of the output shaft is inserted into the shaft transmission mechanism and connected to the impeller. However, in the prior art, when the pump is working, the oil cavity inside the shaft transmission mechanism will cause the state of the oil in the oil cavity to change due to reasons such as the temperature of the pumped liquid and the temperature generated by the mechanical seal working. For example, in a high-temperature state, the oil will evaporate. If the state of the oil changes, the functions of oil sealing and lubrication will be lost. Therefore, industry insiders have tried to regulate the temperature outside the shaft transmission mechanism. However, when regulating the temperature outside, the heat transfer speed is slow, resulting in an unsatisfactory temperature regulation effect, and the state of the oil will also change to a certain extent, thereby reducing the use effect and service life of the shaft transmission mechanism. Based on this, we propose a pump with an oil cavity temperature regulation function. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a pump with an oil cavity temperature regulation function. After the pump body is improved, it can effectively solve the problems raised in the above background technique.

[0005] The technical solution of the utility model is as follows:

[0006] A pump with an oil cavity temperature regulation function includes a driving device, an output shaft, a connecting shaft, a shaft transmission mechanism, and a rotating mechanism;

[0007] The driving device is connected to an output shaft, the other end of the output shaft is connected to a connecting shaft, the connecting shaft is located inside the shaft transmission mechanism, and the other end of the connecting shaft is connected to a rotating mechanism;

[0008] The shaft drive mechanism includes a housing, and several layers of oil chambers, a spare chamber, a mechanical oil seal and a skeleton oil seal are arranged inside the housing. The several layers of oil chambers are arranged alternately or sequentially with the mechanical oil seal, the spare chamber and the skeleton oil seal. The connecting shaft is respectively communicated with the several layers of oil chambers, the spare chamber, the mechanical oil seal and the skeleton oil seal. One of a lubricating oil layer, a cooling layer or a heating layer can be arranged inside the spare chamber.

[0009] Furthermore, the lubricating oil layer is a grease layer; the cooling layer is a coolant layer or a cooling oil layer; the heating layer is a hot liquid layer or a hot oil layer.

[0010] Furthermore, the spare chamber is arranged between the oil chambers.

[0011] Furthermore, an alloy sleeve is installed at one end of the connecting shaft close to the rotating mechanism, and a bearing is installed at the other end of the connecting shaft away from the rotating mechanism. Both the alloy sleeve and the bearing are located inside the housing.

[0012] Furthermore, the mechanical oil seal, the skeleton oil seal, the spare chamber and the several layers of oil chambers are arranged between the alloy sleeve and the bearing.

[0013] Furthermore, the mechanical oil seal is fixedly connected to the connecting shaft, and the skeleton oil seal, the alloy sleeve and the bearing are respectively in transmission connection with the connecting shaft.

[0014] Furthermore, the driving device is a motor, the rotating mechanism is an impeller, and the impeller is detachably connected to the connecting shaft.

[0015] Furthermore, the pump with the function of adjusting the temperature of the oil chamber further includes a pump housing. The open end of the housing is detachably connected to the pump housing. The impeller is located inside the pump housing. One end of the pump housing is provided with a water inlet, and the other end is provided with a water outlet.

[0016] Furthermore, the output shaft can be connected to the connecting shaft through a coupling or the output shaft and the connecting shaft are of an integrally formed structure.

[0017] Furthermore, the pump with the function of adjusting the temperature of the oil chamber further includes an outer cylinder. The shaft drive mechanism is located inside the outer cylinder, and a cooling and heating pipe is fixedly installed on the outer wall of the outer cylinder.

[0018] Furthermore, an electric heating pipe is installed inside the spare chamber.

[0019] The beneficial effects of the present utility model are as follows:

[0020] Compared with the prior art,

[0021] By providing a spare cavity, when an electric heating tube is installed inside the spare cavity, the cavity can be heated, and then the butter inside the other multiple oil cavities can be heated, which can prevent the state of the butter from changing and accelerating the aging speed of the mechanical seal. Similarly, when hot water or hot oil is added to the spare cavity, the butter inside the other multiple oil cavities can also be heated; when cold water or cold oil is injected into the spare cavity, the butter inside the other multiple oil cavities can also be cooled, which can prevent the state of the butter from changing and accelerating the aging speed of the mechanical seal. Therefore, the present utility model adjusts the temperature inside the shaft drive mechanism, and the temperature adjustment effect is good, which can effectively ensure that the state of the oil fluid is not easy to change, thereby improving the use effect of the shaft drive mechanism and extending its service life; in addition, the spare cavity can also be used as an oil cavity, and butter can be injected, which can lubricate the mechanical seal and the skeleton seal, and has the function of spare supplement. Brief Description of the Drawings

[0022] Figure 1 is a schematic structural diagram (sectional view) of the present utility model;

[0023] Figure 2 is a schematic structural diagram (sectional view) of the present utility model connecting to the outer cylinder;

[0024] Figure 3 is a schematic structural diagram of the connection between the shaft drive mechanism of the present utility model and the pump housing.

[0025] In the figure, 1. driving device; 2. output shaft; 3. connecting shaft; 4. shaft drive mechanism; 5. rotating mechanism; 6. housing; 7. oil cavity; 8. spare cavity; 9. mechanical seal; 10. skeleton seal; 11. alloy sleeve; 12. bearing; 13. pump housing; 14. water inlet; 15. water outlet; 16. outer cylinder; 17. cooling and heating tube. Detailed Embodiments

[0026] The following further describes the detailed embodiments of the present utility model with reference to the accompanying drawings:

[0027] As Figures 1-3 shown,

[0028] A pump with an oil cavity temperature regulation function, comprising a driving device 1, an output shaft 2, a connecting shaft 3, a shaft transmission mechanism 4 and a rotating mechanism 5; the driving device 1 is connected to the output shaft 2, the other end of the output shaft 2 is connected to the connecting shaft 3, the connecting shaft 3 is located inside the shaft transmission mechanism 4, and the other end of the connecting shaft 3 is connected to the rotating mechanism 5; the shaft transmission mechanism 4 includes a housing 6, and several layers of oil cavities 7 (the inside of the oil cavity 7 is mainly filled with butter to form a butter layer for lubricating the mechanical oil seal 9 and the skeleton oil seal 10, and having a sealing effect of blocking liquid), a spare cavity 8, a mechanical oil seal 9 and a skeleton oil seal 10. Several layers of the oil cavities 7 are arranged alternately or sequentially with the mechanical oil seal 9, the spare cavity 8 and the skeleton oil seal 10, and the connecting shaft 3 communicates with several layers of oil cavities 7, the spare cavity 8, the mechanical oil seal 9 and the skeleton oil seal 10 respectively; one of a lubricating oil layer, a cooling layer or a heating layer can be arranged inside the spare cavity 8; in this embodiment, by providing the spare cavity 8, when hot water or hot oil is added to the spare cavity 8, the butter inside the other multiple oil cavities 7 can be heated; when cold water or cold oil is injected into the spare cavity 8, the butter inside the other multiple oil cavities 7 can be cooled, and both can weaken the aging speed of the mechanical seal; in addition, the spare cavity 8 can also be used as an oil cavity 7, and butter can be injected to lubricate the mechanical oil seal 9 and the skeleton oil seal 10;

[0029] More specifically, according to the above solution, when using liquid or liquid oil for heating and cooling, the spare cavity 8 can be connected to the external liquid or liquid oil cooling and heating circulation system through a pipeline; moreover, a temperature sensor can be installed in the oil cavity 7 to detect the temperature in the oil cavity 7, which is convenient for feedback to the controller, and then effectively control the external liquid or liquid oil cooling and heating circulation system to adjust the temperature in the spare cavity 8.

[0030] As a preferred implementation manner; the lubricating oil layer is a butter layer; the cooling layer is a coolant layer or a cooling oil layer; the heating layer is a hot liquid layer or a hot oil layer; it can be understood that the butter layer has the functions of sealing and lubricating. By setting the butter layer, the functions of the spare cavity 8 and the oil cavity 7 can be made consistent, and moreover, it can also have the function of supplying butter as a spare. In addition, the spare cavity 8 can also be used for internal temperature regulation of the shaft transmission mechanism 4, mainly for heating or cooling the butter inside other oil cavities 7, thereby weakening the aging speed of the mechanical seal; and the heating medium can be liquid water or oil, or other substances that can be heated or cooled.

[0031] As a preferred implementation manner; the spare cavity 8 is arranged between the oil cavities 7; the purpose of this design is to make the heating and cooling effects of the butter inside the oil cavity 7 better, and the heat conduction speeds of the two oil cavities 7 are the same or similar, which is conducive to ensuring the temperature regulation effects of the butter inside two or more oil cavities 7.

[0032] As a preferred embodiment, an alloy sleeve 11 is installed at one end of the connecting shaft 3 close to the rotating mechanism 5, and a bearing 12 is installed at the other end of the connecting shaft 3 away from the rotating mechanism 5. Both the alloy sleeve 11 and the bearing 12 are located inside the housing 6. By providing the alloy sleeve 11 and the bearing 12, they not only have the function of supporting the connecting shaft 3 (which can form multi-point support in cooperation with the mechanical oil seal 9 and the skeleton oil seal 10), but also have a sealing effect. The gaps between the alloy sleeve 11 and the connecting shaft 3 and between the bearing 12 and the connecting shaft 3 are very small (within 50 microns), which can effectively seal.

[0033] As a preferred embodiment, the mechanical oil seal 9, the skeleton oil seal 10, the spare cavity 8 and several layers of the oil cavities 7 are arranged between the alloy sleeve 11 and the bearing 12. It can be understood that it is the alloy sleeve 11 that first contacts the water instead of the mechanical oil seal 9 or the skeleton oil seal 10. In the structure of a traditional pump, the mechanical oil seal 9 or the skeleton oil seal 10 is arranged close to the impeller end, and the water and dirt in the dirty water are easy to enter the inside of the mechanical oil seal 9 or the skeleton oil seal 10, which easily causes damage to the mechanical oil seal 9 or the skeleton oil seal 10. However, in this application, the alloy sleeve 11 is used for the first-stage seal, which can block more than 95% of the water and dirt in the dirty water, thus effectively protecting the mechanical oil seal 9 or the skeleton oil seal 10. Moreover, the material of the alloy sleeve 11 is alloy, which can extend its service life.

[0034] As a preferred embodiment, the mechanical oil seal 9 is fixedly connected to the connecting shaft 3, and the skeleton oil seal 10, the alloy sleeve 11 and the bearing 12 are respectively in transmission connection with the connecting shaft 3. It can be understood that the alloy sleeve 11 and the bearing 12 are first fixedly connected to the housing 6 and then in transmission connection with the connecting shaft 3, while the mechanical oil seal 9 rotates together with the connecting shaft 3.

[0035] As a preferred embodiment, the driving device 1 uses an electric motor, the rotating mechanism 5 uses an impeller, and the impeller is detachably connected to the connecting shaft 3. It can be understood that when disassembling, the motor and the output shaft 2 can be first removed from the connecting shaft 3, and then the pump housing 13 is opened, and the screws on the impeller and the connecting shaft 3 are removed, and then the connecting shaft 3 can be removed, which is convenient for future maintenance.

[0036] As a preferred embodiment, the pump with the oil cavity temperature regulation function further includes a pump housing 13. The open end of the housing 6 is detachably connected to the pump housing 13. The impeller is located inside the pump housing 13. One end of the pump housing 13 is provided with a water inlet 14, and the other end is provided with a water outlet 15. The pump housing 13 and the housing 6 can be installed by bolts, which is convenient for disassembling the pump housing 13. Secondly, driven by the impeller, water can enter through the water inlet 14 and be discharged through the water outlet 15.

[0037] As a preferred embodiment, the output shaft 2 can be connected to the connecting shaft 3 through a coupling, or the output shaft 2 and the connecting shaft 3 are integrally formed structures.

[0038] As a preferred embodiment, the pump with oil cavity temperature regulation function further includes an outer cylinder 16. The shaft transmission mechanism 4 is located inside the outer cylinder 16 and is fixedly installed. A cooling and heating pipe 17 is fixedly installed on the outer wall of the outer cylinder 16. It can be understood that by providing the outer cylinder 16, the housing 6 forms an inner cylinder structure. The structure of the inner cylinder and the outer cylinder 16 facilitates the installation of the shaft transmission mechanism 4. Moreover, a cooling and heating pipe 17 is also provided on the outer wall of the outer cylinder 16 and is installed in a threaded winding manner to increase the external heating or cooling function. It can achieve multiple modes: First, the internal heating and cooling mode; second, the external heating and cooling mode; third, the combined internal and external heating and cooling mode, making its function powerful.

[0039] As a preferred embodiment, an electric heating pipe is installed inside the standby cavity 8. It can be understood that in addition to using the heating and cooling medium, the electric heating pipe can also be used to meet the needs of different users.

[0040] It is worth mentioning that the housing 6 can be divided into multiple connecting shells. The alloy sleeve 11, the oil cavity 7, the mechanical oil seal 9, the standby cavity 8, the skeleton oil seal 10, and the bearing 12 can all be separately provided with connecting shells. Each connecting shell is provided with a matching connecting groove and step, so that each layer of structure can be detachably connected in a stacked manner, and thus each part of the shaft transmission mechanism 4 can be made detachable, which is more convenient for future maintenance work. At the same time, a sealing ring can be installed at the connection between adjacent connecting shells to enhance its sealing effect.

[0041] In this application, during operation, the motor is started to drive the output shaft 2 and the connecting shaft 3 to rotate, and then drive the impeller to rotate to realize the pumping work of the pump. During operation, water will flow along the connecting shaft 3. Since the shaft transmission mechanism 4 is provided with a multi-layer sealing structure, the alloy sleeve 11 structure at the first place can block 95% of the dirty water, and the multi-layer oil seals and multiple mechanical seals behind make it extremely difficult for water to penetrate, thus effectively protecting the motor and preventing water leakage and splashing. Moreover, the temperature-regulating pump of this application can be used in various different environments such as in water or not in water, and the use effect is good.

[0042] It should be pointed out that the main problems in the prior art are as follows: Those in the industry have tried to regulate the temperature outside the shaft transmission mechanism. However, when regulating the temperature outside, the heat transfer speed is slow, resulting in an unsatisfactory temperature regulation effect, and the state of the oil will also change to a certain extent, thereby reducing the use effect and service life of the shaft transmission mechanism.

[0043] Therefore, after the improvement of this application, by adjusting the temperature inside the shaft drive mechanism 4, the temperature adjustment effect is better, which can effectively ensure that the state of the oil fluid is not easy to change, thereby improving the use effect of the shaft drive mechanism 4 and extending its service life; in addition, the spare cavity 8 can also be used as the oil cavity 7, and grease can be injected, which can lubricate the mechanical oil seal 9 and the skeleton oil seal 10, playing a role of spare supplement.

[0044] The above embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A pump with oil chamber temperature adjustment function, comprising a driving device, an output shaft, a connecting shaft, a shaft transmission mechanism and a rotating mechanism; the driving device is connected to the output shaft, the other end of the output shaft is connected to the connecting shaft, the connecting shaft is located inside the shaft transmission mechanism, and the other end of the connecting shaft is connected to the rotating mechanism; characterized in that: The shaft transmission mechanism includes a shell, and the interior of the shell is provided with several layers of oil chambers, spare chambers, mechanical oil seals and skeleton oil seals. The several layers of oil chambers and mechanical oil seals, spare chambers and skeleton oil seals are arranged alternately or sequentially, and the connecting shaft is connected to the several layers of oil chambers, spare chambers, mechanical oil seals and skeleton oil seals respectively; the interior of the spare chamber can be provided with one of a lubricating oil layer, a cooling layer or a heating layer.

2. A pump with oil chamber temperature regulating function according to claim 1, characterized in that: The lubricating oil layer is a butter layer; the cooling layer is a cooling liquid layer or a cooling oil layer; and the heating layer is a hot liquid layer or a hot oil layer.

3. A pump with oil chamber temperature regulating function according to claim 2, characterized in that: The standby chamber is arranged between the oil chamber and the oil chamber.

4. A pump with oil chamber temperature regulating function according to claim 3, characterized in that: An alloy sleeve is installed at one end of the connecting shaft close to the rotating mechanism, and a bearing is installed at one end of the connecting shaft away from the rotating mechanism. Both the alloy sleeve and the bearing are located inside the housing.

5. A pump with oil chamber temperature regulating function according to claim 4, characterized in that: The mechanical oil seal, the skeleton oil seal, the spare cavity and the plurality of layers of the oil cavity are arranged between the alloy sleeve and the bearing.

6. A pump with oil chamber temperature regulating function according to claim 5, characterized in that: The mechanical oil seal is fixedly connected to the connecting shaft, and the skeleton oil seal, the alloy sleeve and the bearing are respectively drivingly connected to the connecting shaft.

7. A pump with oil chamber temperature regulating function according to claim 6, characterized in that: The driving device adopts a motor, the rotating mechanism adopts an impeller, and the impeller is detachably connected to the connecting shaft.

8. A pump with oil chamber temperature regulating function according to claim 7, characterized in that: The pump with oil chamber temperature regulation function also includes a pump shell, the open end of the shell is detachably connected to the pump shell, the impeller is located inside the pump shell, one end of the pump shell is provided with a water inlet, and the other end is provided with a water outlet.

9. A pump with oil chamber temperature regulating function according to claim 8, characterized in that: The output shaft can be connected to the connecting shaft via a coupling, or the output shaft and the connecting shaft can be an integrally formed structure.

10. A pump with oil chamber temperature regulating function according to claim 9, characterized in that: The pump with oil chamber temperature adjustment function also includes an outer cylinder, the shaft transmission mechanism is located inside the outer cylinder, and a cooling and heating pipe is fixedly installed on the outer wall of the outer cylinder; An electric heating tube is installed inside the standby cavity.

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